1. Coat a large nonstick skillet with cooking spray and set pan over medium-high heat. Add egg whites and cook, until scrambled, stirring frequently, about 3--5 minutes. Remove from pan and set aside.

2. Re-coat the skillet with cooking spray and place back over heat. Add scallions and garlic; sauté 2 minutes. Add chicken and carrots; sauté until chicken is golden brown and cooked through, about 5 minutes.